xen: sched: generalize scheduling related perfcounter macros

Moving some of them from sched_credit.c to generic scheduler code.
This also allows the other schedulers to use perf counters equally
easy.

This change is mainly preparatory work for what stated above. In fact,
it mostly does s/CSCHED_STAT/SCHED_STAT/, and, in general, it implies
no functional changes.

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: George Dunlap <george.dunlap@eu.citrix.com>
Committed-by: Keir Fraser <keir@xen.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index b0def4a424..6c5503978f 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -16,6 +16,7 @@
 #include <xen/tasklet.h>
 #include <xen/mm.h>
 #include <xen/smp.h>
+#include <xen/perfc.h>
 #include <asm/atomic.h>
 #include <xen/wait.h>
 #include <public/xen.h>
@@ -29,6 +30,18 @@
 DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_info_compat_t);
 #endif
 
+/*
+ * Stats
+ *
+ * Enable and ease the use of scheduling related performance counters.
+ *
+ */
+#ifdef PERF_COUNTERS
+#define SCHED_STATS
+#endif
+
+#define SCHED_STAT_CRANK(_X)                (perfc_incr(_X))
+
 /* A global pointer to the initial domain (DOM0). */
 extern struct domain *dom0;